Watch shock absorber



April 27,1926. 1,582,733

I D. M. CLARK WATCH SHOCK ABSORBER Filed April 4,,' 1924 Patented Apr.27, 1926.

UNITED STATEfi DANIEL M, CLARK, OF JAMEsBUItG, NEW JERSEY.

.VTATGH SHOCK ABSORBER.

Application filed April 4, 1924. Serial No. 704,245.

To aZZ whom it may concern:

Be it known that I, DANIEL l I. CLARK, citizen of the United States,resicingat .lamesburg, in the county of Middlesex and f :ate of NewJersey, have invented certain new and useful Improvements i atch ShockAbsorbers, of which the following is specification.

This invention relates to watch shock absorbers, and has for its objectthe cushioning of the works of a watch against injurious impacts, forexample should the watch be accidentally dropped upon a hard surface, nomatter how the watch falls whether so as to strike any portion of theperiphery or any point of either face, front or back. The stated objectis attained in this invention by supporting the works within the case bya plurality of coil springs, so that the movement of the works of thewatch as a whole whatsoever may be the direction is efiectively taken upby the springs without harmful result.

In the accompanying drawings the form and arrangement of the parts ofthis invention are illustrated, and Fi 1 is a front view of a watchcase, slightly enlarged, showing this invention applied thereto. Fig. 2is an enlarged partial section on broken line 22 of Fig. 1, showing amodification. Fig. 3 is a like partial sectional view setting forthanother modification. Fig. 4 is a cross-section of the parts asdelineated in Fig. 1, and Fig. 5 is a like crosssection in which appearsa modified form of the outer and inner rings.

Throughout the description and drawings the same letter is used to referto the same part.

Considering the drawings, the case A has the rim (4, and arrangedusually against the rim within the case is the outer ring B of thisinvention, of which the inner ring is marked 6 and the spaced coilsprings C. The winding stem of the watch is referred to by letter D, andit will be noted that the inner ring Z) may have an opening cl so thatthe ring may move slightly with respect to the stem without contact.

As best shown in Fig. 4 the inner ring has an annular shoulder E toreceive and seat the works of the watch.

The modification illustrated in Fig. 5 so far as the springs G and innerring 9 are concerned is the same as before but the outer ring F has theexternal threaded portion for engagement with the correspondinglythreaded edge portion of a case when such construction is adopted.

In the modification shown in Fig. 2, the case has the peripheral, hollowrounded form'H, and the outer ring is made with an extension j to litwithin the hollow II of the case. To secure the parts J and the casetogether, the screw K is introduced as illustrated, the adjacentportions of the parts being fashioned accordingly, but it will beunderstood that this invention is not 0011- fined to any means or methodof securing the outer ring and case together. If it is necessary theouter ring may be interrupted by a transverse cut is, in order that itmay be slightly compressed to enable it to be en gaged with the curvedhollow peripheral part II of the case. I11 Fig. 2 the inner ring ismarked L, and the coil springs are designated by the letter Z. These arethe same as before. Usually, the ends of the springs are soldered to theouter and inner rings in proper position, but this invention is notintended to be limited to any particular means or method of securing theends of the springs to the rings. Further considering Fig. 2, let it beassumed that M marks the top plate and N the bottom plate of the worksof a watch. The plate M may be fastened to the inner ring L by means ofa screw m engaging a threaded orifice in the inwardly turned ec ge lug mof the ring L. It will be understood were such construction followed,the lower plate N of the works would be formed with suitable edgerecesse n for the passage of the lug m when the works are introducedinto the inner ring L.

In the. modification set forth in 3 the case 0 has the same curving,hollow peripheral portion as described in connection with Fig. 2. Theouter ring P and the fastening screw Q with its necessary adjuncts arethe same as before, as are also the springs R. But, for the inner ringposts S are substituted extending between the plates T and U of theworks of the watch, and secured in place by soldering or in any othermanner used by jewelers.

The operation is the same in the modifications, as in the preferred formof this invention, and is believed to be now clear from the drawings andthe foregoing. lhe coil springs cushion the works from shocks no matterhow the watch may strike as it falls, or however a blow is received bythe case.

As the devices for supporting the inner and outer ends of the spacedcoil springs Within the Watch case may obviously be so readily modifiedby almost any Watchmaker, it is not the intention of this application tolimit the invention to the holding contriva-nces illustrated.

Having now described this invention and explained the mode of itsoperation, I cleimz- 1. In a Watch shock absorber, the combination witha case, of an outer ring Within the ease, detachable means for securingth said ring and the case together, a support for the Works of a Watchinside the said outer ring a plurality of coil springs spaced apart, oneend of each spring being connected with the said ring, and means forconnecting the other ends of the said springs with the said Workssupport.

2. In a Watch shock absorber, the coin bination with a case, of an outerring within the case, detachable means for securing the said ring andcase together, a plurality of coil springs spaced apart, one end outeach spring being connected with the said ring, an inner ringconstructed to receive the Works of a Watch, and the inner ends of thesaid springs being connected with the said inner ring.

In testimony whereof? I afiix my signature.

DANIEL M. on-inn.

